Dear gluster experts, Recently I have encountered a problem about posix_fallocate performance on glusterfs client. I use posix_fallocate to allocate a file with specified size on glusterfs client. For example if I create a file with size of 1907658896, it will take about 20 seconds on glusterfs but on local xfs or ext4 it takes less than 1 second. What's the problem? How can I improve posix_fallocate performance for glusterfs? Thank you very much. BTW The volume info is as bellow: sudo gluster volume info volume_e Volume Name: volume_e Type: Distributed-Replicate Volume ID: 81702024-f327-4ae1-b06a-1f2b877d5ebb Status: Started Number of Bricks: 2 x 2 = 4 Transport-type: tcp Bricks: Brick1: glusterfs-test-dev001.qiyi.virtual:/mnt/xfsd/volume_e Brick2: glusterfs-test-dev002.qiyi.virtual:/mnt/xfsd/volume_e Brick3: glusterfs-test-dev003.qiyi.virtual:/mnt/xfsd/volume_e Brick4: glusterfs-test-dev004.qiyi.virtual:/mnt/xfsd/volume_e -- ???